Door-lock for dump-cars.



A. ANDERSON.

DOOR LOCK FOR DUMP CARS.

APPLICATION FILED APR. 5. 1915.

W 4 mm a w; y m 7 y m f n A. ANDERSON.

DOOR LOCK FOR DUMP CARS.

APPLICATION FILED APR. 5. 1915.

1,244,684.. Patented Oct. 30,1917.

2 SHEETS-SHEET 2.

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l gation.

AUGUST. ANDERSON, or CHICAGO, rumors, AssIGNoa T0 AMERICAN can AND FOUNDRY COMPANY, or sr. LOUIS, MISSOURI, A CORPORATION orNEw JERSEY.

DOOR-LOCK FOR DUMP-CARS.

' Application filed April 5, 1915. seria No. 19,221.

companying drawings, which illustrate the preferred form of the invention, though it is to be understood that the invention is not limited to the exact details of construction shown and described, as it is obvious that various modifications thereof will occur to persons skilled in the art.

In said drawings:

Figure 1 is a transverse sectional view of somewhat more than half of the car width, is taken-on line 11 of Fig. 2, and shows the door locking mechanism holding the doors in closed'position. Fig. 2 is a section of part of the car through the central longitudinal plane there of, and is taken on line 22 of Fig. 1.

Fig. 3 is an enlarged transverse sectional view, taken on line 33 of Fig. 2, and shows a door locking mechanism similar to that of Fig. 1, but modified to accommodate flexible door raising means; and,

Fig. l is a horizontal sect-ion, taken on line 44 of Fig. 3,-illustrating the structure and disposition of certain of the parts as viewed in plan. The present invention has been developed with a view to providing means, for posi tively' holding the doors of a dump, car

against accidental opening, but which will permit a quick and positive, release thereof at will without/the imposition of undue shocks to the mechanism. provided ,t'oaccom plish these results.

Another object is to utilize the door-opening tendency of the load in the car to automatically. oppose with equal strength any unintentional release of the doors. And the arrangement of-the parts is such, that until f Specification of Letters Patent.

form and apply to car center sills supporting members for Patented Oct. so, 1917.

the door locking members, that a break down of the door supporting means is well guarded against. Y

The mechanism occupies a highly protected position, where there is a mlnimum of danger ofinjury to it, and it is composed of strong and substantial parts of simple character.

; W'hateverlother advantages become apparent in the following disclosure'are to be understood to loo-included withingthe scope of the invention herein described. f

- In thefdrawings, 1 indicates the center sills or central supporting girder of a car, commercial channels with theirflanges inturned having been selectedto serve as such, and 2-rep1iesentsthefside sills orbottom chords of plate girder "side walls 3, saidsills being illustrated as angles with their'horizontal legs outstanding, though any suitable structure may replace either of the adopted sills. e

Attached to side sills 2 arevhinge castings 4', which may, as shown, have flanges adapted to lie against the legs of the side sill angles andto be suitably secured thereto, and also having depending hinge lugs to which the doors, 5 may be pivotally connected.

The doors 5 are not restricte'dtoany particular form, but preferably have "depending side flanges and their inner edges stiffened by angles 6, the vertical legs of which form a depending;fiange for that part' of the door. In the closed position of the doors the inner edges thereofare adapted to bear against the under 'sideof the center 5111s 1,

and arelheld intight contact with the latter by locking dogs 7 These locking dogs are arrangedin pairs,

and each pair constitutes a locking toggle, the dogs of each pair extending in opposite directions, and their outer ends are adapted to passbeneath the vertical legs of stiffening' angles 6 and to bear, when the doors are closed,- against the bottom surfaces of bearing blocks 8, fitted into the internal angle. of stiifeners 6, to the legs of which thesaid bearingbloc'ks aresecured. :Blocks 8 may be economically produced in: the form of castings.

-Each locking dog 7 is hung through termediate links 11 froma supporting cast ing or piece-9, which rests upon the upper surface of the bottom flange of the center sill 1, and is secured to that flange and to the web of said sill. The supporting casting is provided with a depending lug 10, which extends through and below said center sill bottom flange, and from the lower end of each lug 10 is suspended the pair of links 11, one on each side of said lug. At their lower ends, each of said links is pivotally connected to one of the locking dogs 7 intermediate its length. p

The inner ends of said locking dogs are pivotally connected with each "other and with an operating link 12 or 12 which extends upwardly between the center sills 1, and when the doors are closed inclines toward one of said'sills.

Operating link 12 is different from link 12, in that it has intermediate its length a loop 13, of such configuration as to permit a. chain 14, of an affiliated door winding mechanism, to operate" through said link without interference, or the link to operate without disturbing said chain.

At its upper ends, each operating link 12 and 12 is pivotallyconnected with a crank arm 15, here shown as being of the bifurcated type, and each of said levers and its associated crank arm forms an operating toggle for controlling the locking toggle. Said crank arms 15 are mounted upon and movable with an operating shaft 16, located between the center sills 1, at or near their tops, and o one side of the vertical plane that is midway between the sills, which is also the central vertical longitudinal plane of the car. Operating shaft 16 may be of rectangular or other non-circular cross-section, and the .hubs of said crank arms have perforations of like contour, or said crank arms may be attached by keys, pins or cotters, etc., and may be operated by any suitable means (not shown).

Each crank arm 15 has an annular distancing and positioning flange 17 on its hub, the latter continuing beyond flange 17 to constitute a bushing 18, which is supported by and is revoluble in bearings 19. Anna lar flange 17 spaces the crank arm 15 a suitable distance from the adjacentbearing 19, and prevents said crank arm changing its position to a point nearer said bearing.

Bearings19 are preferably integral parts of certain of the shaft supportingcastings 20, which are supported by the center sills,

To provide a suitableriveting area, the

"the positionsshown in dot and dash lines in Figs. 1 and 3.

Crank arms 15 are furnished with heels 23, each of which may be an integral extension from one of said crank arms, and which, when the doors are closed, bear against the under side of the top flange of a center sill 1, andso limits themovement of the parts in the door-closing operation. And when the doors are closed, any tendencyfor them to open, as by reason of the weight of the lading, will be proportionately resisted by the reaction through looking dogs7, operating links 12 and 12 and members 15, whose heels 23 bear against the center sill flange, asset forth. I

The modus 'opemndi is as follows: With the doors closed, and the parts in the position shown in full lines, if it be desired to discharge a load, the operating shaft 16 will be rotated clockwise, as viewed in Figs. 1 and 3, until the crank arms 15 have moved, as indicated, into the recesses in the shaft supporting castings 22.

The upper ends of operating links 12 and 12 will also have been carried by the I only from under blocks 8 but out of the I way ofthe, path ofthe doors 5, which will then drop to their open or discharge positions. The positions of the doors and of the parts of the door lock mechanism under these conditions .is clearly indicated in dot and dash lines in Fig. 1.

Doors 5 are raised to their closed positionsby any suitable means, such as chain 14:, but the raising means is not relied upon to lock and sustain them in place. After the closure of the doors, operating shaft 16 is rota-ted counter-clockwise, and crankarms 15 return to the position shown in full lines.

I Responding to the action .ofth'e crank arms 15, operating links 12 and 12 force the inner pivoted ends of locking dogs 7 downwardly fromthe positions shown in dot and dash lines in Fig. 1 to the full line positions in that figure. Locking dogs 7, during this action, have a reversedv combined rocking and swinging 'motion, and pass beneath their'associated doors andbear against hearing blocks 8. g 7

-The last part of the downward thrust of links 12 and 12 cause the outer ends of the locking dogs 7 to press the inner edges of the doors' in tight contact with the under 1 side of the center sills 1. Each pair of lockline passing through the centers of operat-v ing shaft 16' and the pivotalconnection of the pair of locking dogs. This can onlybe accomplished by the proper and deliberate rotation of said operating shaft 16.

hat I claim is 1; In a car door locking mechanism for oppositely disposed doors, a single locking toggle strai htened to maintain the same closed, and an operating toggle adapted to cause said locking toggle to support or release said doors.

2. In a single locking mechanism for car doors, a locking toggle comprising doorlocking members adapted to be straightened to maintain a plurality of said doors closed,

7 means for, permitting the swinging of said locking members away from the'doors, and mechanism adapted to ro'cksaid members and cause the same to support or'release said doors.

' 8. In a locking mechanism for drop doors,

a locking toggle supported by oscillatory means and comprising door-locking dogs adapted to swing away from said doors and being pivoted to and rocked by an operating toggle located between and supported by car center sills, and adapted to causesaid locking toggle to support or release said doors, and means for actuating said operat-' ing toggle.

4. In a car door locking mechanism for drop doors on opposite sides of car center sills, a plurality of locking toggles, one for each pair of oppositely disposed doors, each toggle being supported from said sills by oscillatory means and comprising door-locking dogs, an operating toggle pivotally connected to each locking toggle and supported from said sills and adapted to cause said locking dogs to support or release said doors, and means for simultaneously actuating all of said operating toggles.

5. In a car door locking mechanism, doors hinged from car sides and adapted to close against car centersills, a'doorlocking toggle comprising locking dogs, oscillatory links, pivotally connected thereto intermediare their lengths, and supports attached to said center sills for pivotally suspending said links from their centers of rotation.

'6. In a car door locking mechanism, doors adapted to close against car center sills, a locking togglehaving members supported from center sills by oscillatory means, and an, operating toggle comprising a link and a lever and an operating shaft to which said lever is attache I ,7. In a car door locking mechanism, doors, car center sills against the bottom of which said doors are adapted to close, supporting members connected with a lower portion of said sills, said members being sustained by the said sills,a plurality of depending oscillatory links pivoted to the lower portions of said members, and'locking dogspivoted intermediate their lengths to said links and having their inner ends pivoted together, and operating means for said locking dogs. 8. In a car door operating mechanism, center sills, doors having reinforced Jedges adapted to close against said center sills, bearingvblocks secured to said edges, and a locking toggle comprising door locking dogs supported from said sills by oscillatory means, an-dadapted to be rocked by. operat ing means and to bear against said blocks to support the doors.

'9. In a car door locking mechanism, rockable means adapted to engage doors to main tain them closed, a swinging support for said means-and also an operating toggle therefor comprising a. toggle-jointed link and lever, said lever being suitablysupported, and a shaft for rotating. said leverto cause the engagement and disengagement of the doors 7 by said rockable means.

10.7In aj'car door locking" mechanism adapted to coact with flexible door-raising means, rockable engaging means for doors, an oscillatory support for said means, and an operating toggle therefor comprising a lever and a link. V p p t lfll In gear door locking mechanism, doors, car center sills against the bottom of which said doors are adapted to close, said sills having flanges and webs, supporting members sustained by said sills, a plurality of oscillatory links pivoted to said mem bers, locking dogs pivoted to said links and having their inner ends pivoted together, and operating means for said locking dogs. 12. In a car door operating mechanism, car center sills against the bottom of which said doors are adapted to close, said sills having flanges and webs, supporting members sustained by said sills and positioned on the inner sides thereof, a plurality of oscillatory links pivoted to said members,

lengths to said links and having their inner ends pivoted together, and means for operating said dogs.

13. In combination in a car, opposed doors closing near the center of the car, door lifting means, a single shaft extending longitudinally of the car and door locking latches having mutually responsive connection with each other and operable from said longitudinal shaft adapted to lock or release said opposed doors.

14-. In a dump-car-door locking mechanism, oppositely extending rockable doorlocking dogs, an operating toggle and means for actuatingsaid toggle to cause said doorlocking dogs to engage said doors.

15. In a car door locking mechanism, rockable locking means for a plurality of doors and operating means therefor, including a leverand a link depending from said lever and pivotally connected to portions of said door locking means that are associated with diiferent doors.

16. In a dumping car, a central girder, plurality of links depending therefrom, locking dogs connected with said links and a dog actuating member connected with said dogs.

17. In a dumping car, a central girder, a

plurality of doors opening away from said girder, links depending from said girder, oppositely extending door locking dogs carried by said links adapted to extend beneath said doors and an operating means connected to both dogs adapted to rock the same.

18. I11 combination in a door locking means, a pair of oppositely extending and pivotally supported door locking dogs, in combination with a pair of oppositely opening doors, a rockable shaft and a member operable in response to the actuation of said shaft, pivotally connected with both said locking dogs and adapted to rock the looki ing dogs.

19. In combination in a door locking means,-a central glrder, a'palr of dumping Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

doors Opening oppositely away from said girder, a pair of pivotally connected and oppositely extending door-locking dogs adapted to lock said doors inclosed position and dog actuating means supported by said girder adapted to actuate said dogs.

I 20. In combinatlon 1n a door locking means, a central girder, doors opening oppositely away from said girder, and means for locking both doors in closed POSlillOIl' locking members and rockable means adapt ed to cause said link to actuate said door locking members and thereby lock the doors in closed position.

In combination, a pair of pivotally connected oppositely extending door1o0king dogs adapted to underlie a pair of oppositely opening doors of a dump car in combination with means pivotally supporting said locking dogs and means adapted to rock the same; 1

23. In combination in a dumping car, spaced center sills, side-supporting members, doors extending from said side-supporting members toward said center sills, rockable door-locking means including members adapted to engage oppositely extending doors and supported near said center sills and a shaft positioned above said door-engaging members and extending longitudinally ofsaid sills and engaging said doorlocking means.

In witness whereof I have hereunto set my hand in the presence of two witnesses.

AUGUST ANDERSON. Htnesses'? I a WM. 0. WOOD, JOHN OLSON. I I

. Washingtoml). G. 

